Subbing material for styrene bases used in photographic elements

Abstract

A photographic material comprising (I) a styrene-based polymer support having thereon a subbing layer which comprises a partial or complete reaction product of (a) a copolymer of styrene or vinyl acetate with maleic anhydride with (b) water or a hydroxy compound such as alcohol and (II) a photographic layer comprising a hydrophilic resin binder bearing on the subbing layer, wherein a compound containing two or more epoxy groups per molecule is contained in the subbing layer or in both of the subbing layer and the photographic layer.

What is claimed is: 
     
       1. A method for manufacturing a photographic material which comprises coating a subbing composition in layer form on a styrene-based polymer support, said composition consisting essentially of 5g or less per m 2  of said support of a complete or partial reaction product of: materials consisting essentially of (a) a copolymer of styrene or vinyl acetate with maleic anhydride which contains 40-50% by weight of maleic anhydride with (b) water or a hydroxy compound represented by the general formula R 1  --OH wherein R 1  is a monovalent hydrocarbon group having 1 to 12 carbon atoms or monovalent organic group having 2-12 carbon atoms and consisting of at least two hydrocarbon fragments and at least one ether linkage between said hydrocarbon fragments, at least 30% of the maleic anhydride units of said copolymer being reacted with the water or the hydroxy compound thereby obtaining a reaction product consisting essentially of the following recurring units: ##STR3## in which R 3  is a hydrogen atom or a group defined by R 1 , R 2  is a phenyl group or a --OCOCH 3  group and the amount of the maleic anhydride unit in said copolymer may be zero, and coating a hydrophilic photographic composition containing a hydrophilic resin binder in layer form on the subbing layer, where the resulting hydrophilic photographic composition layer is selected from the group consisting of (1) a layer containing silver halide, (2) a layer containing physical developing nuclei to serve as a receiving layer in diffusion transfer photography, a hydrophilic photographic curl preventing backing layer or a hydrophilic photographic anti-halation backing layer, where a compound containing at least two epoxy groups per molecule is contained in a proportion of from 10 to 500% by weight based on the weight of said copolymer in at least one of the subbing composition or the hydrophilic photographic composition. 
     
     
       2. The method of claim 1 in which said compound containing two or more epoxy groups per molecule is in the subbing composition. 
     
     
       3. The method of claim 1 in which said compound containing two or more epoxy groups per molecule is in the hydrophilic photographic composition. 
     
     
       4. The method of claim 1 in which said compound containing epoxy groups has a molecular weight less than about 20,000. 
     
     
       5. The method of claim 1 in whichsaid compound containing epoxy groups has a molecular weight less that 1,000. 
     
     
       6. The method of claim 1 wherein said compound containing two or more epoxy groups is selected from the group consisting of: ##STR4## 
     
     
       7. The method of claim 1 wherein said subbing composition additionally contains gelatin. 
     
     
       8. The method of claim 1 wherein said complete or partial reaction product of said copolymer has a molecular weight ranging from about 8,000 to about 1,000,000. 
     
     
       9. The method of claim 1 wherein R 1  is an alkyl group, a phenyl group, a phenylalkyl group, an alkoxyalkyl group, an alkoxyalkoxyalkyl group, o5r a phenoxyalkyl group. 
     
     
       10. The method of claim 1 wherein said hydroxy compound is an alcohol and said R 1  is selected from the group consisting of methyl, ethyl, propyl, butyl and lauryl. 
     
     
       11. The method of claim 1 wherein said subbing composition is coated on said support after a surface pretreatment of said support. 
     
     
       12. The method of claim 11 wherein said surface pretreatment is by a corona discharge treatment, an ozone oxidation treatment, an ultraviolet irradiation treatment, a flame treatment, an electroless discharge treatment, or a low pressure electric discharge treatment. 
     
     
       13. The method of claim 1, wherein hydrophilic hydrophilic composition is in the form of an emulsion or dispersion. 
     
     
       14. The method of claim 1, wherein said hydrophic photographic composition if in the form of a solution. 
     
     
       15. The method of claim 1, wherein said hydrophilic composition contains silver halide. 
     
     
       16. The method of claim 1, wherein said hydrophilic composition contains physical development nuclei. 
     
     
       17. The method of claim 1, wherein said hydrophilic resin binder in said hydrophilic photographic composition comprises gelatin. 
     
     
       18. The method of claim 1, wherein said hydrophilic resin binder in said hydrophilic photographic composition consists of gelatin. 
     
     
       19. The method of claim 1, wherein said copolymer consists of a copolymer of styrene and maleic anhydride. 
     
     
       20. The method of claim 1, wherein said copolymer consists of a copolymer of vinyl acetate and maleic anhydride.